London’s equities markets saw gains on the session Wednesday.

The FTSE 100 was 0.27 percent higher to 6,633 and the FTSE 250 gained 0.74 percent to 11,512.1.

In the banking sector, Northern Rock (LSE: NRK) added 32.29 percent to 273p after a hedge fund based in Monaco purchased a 4 percent stake in the troubled financial institution.

Other banks did not do as well on the day.

Barclays Bank (LSE: BARC; NYSE: BCS; TYO: 8642) was down 1.5 percent to 655.5p, while HBOS (LSE: HBOS) fell 3.09 percent to 926p after Lehman Brothers downgraded the bank from “overweight” to “underweight” and dropped its target share price from £10.46 to £10.28.

Voting shares in investment manager Schroders (LSE: SDR.L) added 5.71 percent to £15, while non-voting shares (LSE: SDRt.L) were up 4.27 percent to £12.94.

Business services group Experian (LSE: EXPN) had the worst day on the 100, where it fell 7 percent to 505p.

In the pharmaceuticals sector, meanwhile, Shire (LSE: SHP; NAS: SHPGY) dropped 2.1 percent to £12.15.

Reinsurer Benfield Group (LSE: BFD) was 2.83 percent lower to 724.25p, while construction group Severfield-Rowen (LSE: SFR) fell 2.65 percent to 552p.

Miners led the way in London as the FTSE 100 added 0.73 percent to 6,595.8 and the FTSE 250 gained 0.18 percent to 11,390.4.

Anglo American (LSE: AAL) was up 2.92 percent to £33.43 and Antofagasta (LSE: ANTO) was 3.25 percent higher to 826p, while Kazakhmys (LSE: KAZ) turned in the best performance on the 100 as it added 4.59 percent to £15.96.

Meanwhile over on the 250, price comparison website Moneysupermarket.com (LSE: MONY) was the top performer of the day with a gain of 5.57 percent to 189.5p.

Construction group Severfield-Rowen (LSE: SFR) was up 4.04 percent to £21.10.

House builders and property developers, however, didn’t do as well over on the 100.

Land Securities Group (LSE: LAND) was 3.21 percent lower to £16.87, while British Land (LSE: BLND) was down 3.44 percent to £11.24 after it said it will not sell its stake in Meadowhall shopping center after all.

Barratt Developments (LSE: BDEV) dropped 4.14 percent to 765p while Hammerson (LSE: HMSO) was down 4.26 percent to £11.68.

But Alliance & Leicester (LSE: AL) turned in the worst performance on the 100 as it fell 6.81 percent to 794p on a broker downgrade.

Mortgage lender Bradford & Bingley (LSE: BB) did the worst on the 250, dropping 6.58 percent to 285p.

London’s markets also declined, with the FTSE 100 down 1.07 percent to 6,396.9 and the FTSE 250 closing at 10,853.2, a drop of 1.7 percent.

Miners dropped as metals prices declined.

Vedanta Resources (LSE: VED) had the worst day on the 100 as it fell 6.49 percent to £20.90, while Antofagasta (LSE: ANTO) dropped 6.35 percent to 789.5p and Lonmin (LSE: LMI) was 5.35 percent lower to £32.02.

Northern Rock (LSE: NRK) had another down day, falling 5.17 percent to 163.10 as it said it won’t pay a dividend it had promised to investors.

House builder Taylor Wimpey (LSE: TW) was down 5.72 percent to 255.5p.

Property developer Hammerson (LSE: HMSO), on the other hand, added 1.06 percent to £11.40.

Electric power transmitter National Grid (LSE: NG) had the best day on the 100 with a gain of 2.5 percent to 780p, while Scottish & Southern Energy (LSE: SSE; OTC: SSEZY) added 1.38 percent to £14.73.

Over on the 250, electricity generator Drax Group (LSE: DRX) was 2.38 percent higher to 602p.

Natural gas utility Wellstream (LSE:WSM) gained 10.79 percent to 770p for the best day on the 250.

Construction groups were mixed.

Alfred McAlpine (LSE: MCA) was up 2.83 percent to 449.5p but Severfield-Rowen (LSE: SFR) was 6.65 percent lower to £21.05.

In London on Wednesday, the FTSE 100 added 1.81 percent to 6,196 and the FTSE 250 was up 2.55 percent to 10,910.7.

Miners were higher on the day after BHP Billiton (LSE: BLT; NYSE: BHP; ASX: BHP) announced that its underlying profit was up 35 percent in the full year on increased demand from China and on higher commodity prices.

BHP was 4.92 percent higher to £13.65, taking other miners with it.

Anglo-American (LSE: AAL) was up 4.68 percent to £27.52, while Antofagasta (LSE: ANTO) gained 6.19 percent to 694.5p and Rio Tinto (LSE: RIO) added 6.81 percent to £32.80 and Lonmin (LSE: LMI) jumped 7.22 percnet to £31.77.

Pubs operator Punch Taverns (LSE: PUB) added 6.4 percent to £10.39 on positive broker comment.

Rivals Mitchells & Butlers (LSE: MAB) and Enterprise Inns (LSE: ETI) were also higher, gaining 3.8 percent to 704p and 5.8 percent to 611p respectively.

Some banks also saw gains. HSBC (LSE: HSBA; NYSE: HBC; Euronext: HSBC; SEHK: 005) was up 1.2 percent to 907p after it said it will close an office in Indiana next year and will eliminate 600 jobs on account of subprime problems.

Standard Chartered (LSE: STAN; SEHK: 2888) gained 2.2 percent to £15.75, while Northern Rock (LSE: NRK) added 3.7 percent to 728p.

Construction-related shares did well on the 250.

Construction engineering firm Keller Group (LSE: KLR) added 6.88 percent to 987p.

Atkins (LSE: ATK), which offers construction management and consulting services, was up 8.61 percent to £10.28, while builder Severfield-Rowen (LSE: SFR) was the best perfomrer of the day on the 250 as it gained 8.83 percent to £22.68.

The oil sector was mixed.

JKX Oil & Gas (LSE: JKX) had the worst day on the 250, falling 4.25 percent to 354.75.

On the other hand, Tullow Oil (LSE: TLW; OTC: TUWLY) was 4.4 percent higher to 483p after it said it had made a “significant” discovery offshore near Ghana.

The worst performer on the 100 was Scottish & Southern Energy (LSE: SSE) with a drop of 2.94 percent to £13.85.

In the telecommunications sector, Vodafone (LSE: VOD; NYSE: VOD; FWB: VOD) was 0.26 percent lower to 156p, while BT Group (LSE: BT.A; NYSE: BT) dropped 2.24 percent to 305p.

In the retail sector, DSG International (LSE: DSGI) was down 0.63 percent to 159p.

Equities markets were lower in London on Wednesday.

The FTSE 100 dropped 0.68 percent to 6,454.3, while the FTSE 250 was down 1.46 percent to 11,415.2.

Pharmaceutical group GlaxoSmithKline (LSE: GSK; NYSE: GSK) topped the 100, adding 2.33 percent to £12.75 on an unexpected increase in second quarter profits based on greater demand for its Advair asthma treatment.

GSK also announced an expansion of its share buy-back program.

Meanwhile on the 250, electronics and engineering group Renishaw (LSE: RSW), which makes gauges and meters, was the top performer with a gain of 14.33 percent to 684p/

Other gainers on the day included the banking sector.

On the 100, Northern Rock (LSE: NRK) added 1.87 percent to 817p, while on the 250 Bradford & Bingley (LSE: BB) gained 0.97 percent to 416.75p and Close Brothers Group (LSE: CBG) was up 1.93 percent to 845p.

Defense aerospace group BAE Systems (LSE: BA; OTCBB: BAESY) was 1.63 percent higher to 435.25p.

On the losing side, British Energy had the worst day on the 100, dropping 5.21 percent to 483.5p on a broker downgrade.

The worst performer on the 250 came from the semiconductors sector, where CSR (LSE: CSR) fell 11.28 percent to 770.5p.

The mining sector declined on copper prices that were lower.

Antofagasta (LSE: ANTO) was 2.47 percent lower to 723p, while Rio Tinto (LSE: RIO) was down 3.65 percent to £35.90.

On the 250, property developer Daejan Holdings (LSE: DJAN) fell 5.75 percent to £38.86, while builder Severfield-Rowen (LSE: SFR) dropped 5.69 percent to £22.36.